Engineering & TechnologyA manual of telegraph construction: the mechanical elements of electric telegraph engineeringJohn Christie Douglas![A manual of telegraph construction: the mechanical elements of electric telegraph engineering]()
A manual of telegraph construction: the mechanical elements of electric telegraph engineering
John Christie Douglas
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“A manual of telegraph construction: the mechanical elements of electric telegraph engineering” by John Christie Douglas: a public-domain book in…
Catalogue details
- Author
- John Christie Douglas
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust